Lamp socket and globe coupling



July 28, 1925 1,547,161

H. W. BATCHELLER LAMP SOCKET AND GLOBE COUPLING Filed March 21. 1925 Patented July 28, 1925.

1 UNITED STATES PATENT OFFICE.

HUGH W. BATCHELLER, OF WINOOSKI, VERMONT, ASSIGNOR TO WINOOSKIELECTRIC MANUFACTURING COMPANY, INC., OF WINO-OSKI, VERMONT, A CORPORATION OF VERMONT.

LAMP SOCKET AND GLO'IBE COUPLING.

Application filed March 21, 1925.

To all whom it may concern:

Be it known that I, HUGH W. BATCH- ELLER, a citizen of the Dominion of Canada, residing at Vlinooski, in the county of Chittenden and State of Vermont, have invented new and useful Improvements in Lamp Socket and Globe Couplings, of which the following is a specification.

The object of this invention is to provide improved means for separably connecting with a socket-holding a lamp, such as an incandescent electric lamp, a glass globe enclosing and protecting the lamp, the globe being usually of colored glass, modifying the color of the light from the lamp.

Of the accompanying drawings forming a part of this specification,

Figure 1 shows a lamp socket, a globe and a coupling embodying the invention, and including an inner coupling ring fixed to the socket and an outer coupling ring fixed to the globe, the coupling rings being interengaged, the socket being shown in side elevation, the globe partly in section, and the coupling wholly in section.

Figure 2 is a perspective view of the socket and the inner coupling ring fixed thereto. 7

Figure 3 is a perspective view of the outer coupling ring.

Figure 4 is a perspective view of the washer hereinafter described.

Figure 5 is a top plan view, showing the coupling rings interengaged.

Figure 6 is a section on line 66 of Figure 1, showing the coupling rings interengaged.

Figure 7 is a view similar to Figure 6, showing the outer coupling rings released from interengagement, and in position for removal.

Figures 8 and 9 are fragmentary sectional views, illustrating the detent means hereinafter described.

The same reference characters indicate the same parts in all of the figures.

In the drawings, 12 designates a lamp socket adapted, in this instance, to be secured to a fixed support 13, and to be separably engaged with the base 14 of an electric lamp.

Fixed to the socket 12 is an inner coupling ring 15, provided with an outwardly projecting annular seat 16, and with out Serial No. 17,217.

wardly projecting cars 17, above the seat. The ring 15 is preferably fixed to the socket by a hub 18, (Figure 1) integral with the ring and brazed or soldered to the socket in any desired form. Fixed to the base or open end of the globe is an outer coupling ring 21, provided with an inwardly projecting annular flange 22, adapted to bear on the seat 16, said flange having notches 23, arranged to register with the ears 17, so that the ringsmay be interengaged by holding the outer ring in position to aline the notches 23 with the cars 17 then moving the outer ring 21 inward into the inner ring, until the notches pass below the ears, and then giving the outer ring a quarter turn, thus locating the notches out of alinement with the ears, so that the ears are in position to prevent removal of the outer ring by an outward movement thereof.

26 designates an annular washer of resilient sheet metal, seated on the flange 22 of the outer ring, and surrounding the inner ring 15. Said washer includes resilient curved portions or spring brakes 27, at the inner margin of the washer, formed and arranged to contact with the cars 17 as shown by Figure 1, when the coupling rings are interengaged as above described. To prevent the washer from turning on the flange 22, I provide the washer with downwardly projecting cars 28 (Figure 4), entering the notches 23, said ears and notches constituting interengaging means, confining the brakes 27 in predetermined positions relative to the outer ring. The arrangement is such that the spring brakes 27 are tensioned by their contact with the ears, and act to frictionally oppose a turning movement of the outer ring to the releasing position shown by Figure 7. This action is due in part to the upward pressure of the spring brakes upon the ears 17, and in part to the downward pressure exerted by the brakes on the flange 22, the latter being pressed forcibly against the seat 16.

It will now be seen that the globe and he outer ring 21, fixed thereto, may be engaged with the inner ring by an inward push followed by a partial turn, and may be separated from the inner ring by a partial turn followed by an outward pull.

To additionally confine the outer ring in engagement with the inner ring, I provide the inner ring seat 16, and the outer ring flange 22, with detent means adapted to cause a semi-positive engagement between said seat and flange, when the rings are interengaged. In this instance, an element of said means is provided by the notches 23, in the flange 22, and a cooperating element is provided by detents 30, formed on the seat 16. The detents are provided with upper faces of an inverted V-shape, as shown by Figures 8 and 9. The arrangement is such that when the coupling rings are interengaged, and the spring brakes are tensioned, the detents 30 are in the notches 23, as shown by Figure 8, a semi-positive engagement being set up between the seat 16 and flange 22, which is sufliciently positive to prevent liability of accidental turning of the outer coupling ring to its released POSI- tion, and is sufliciently yielding to permit the turning of the outer ring when force is applied thereto. The outer ring has suflicient freedom of movement in the inner ring to permit the flange 22 to slide over the detents 30, as shown by Figure 9. r The globe 20, here shown, is of standard form and has a mar inal bead (Figure 1) fitting closely in the outer ring 21, and provided with a shoulder 32. The outer ring is preferably fixed to the globe by inserting the bead in the outer ring, with a rul ber packing 33 placed on the shoulder 32, and then turning inward the upper edge of the outer ring to form a lip 3%, compressing the packing on the shoulder.

A rubber gasket 35, is preferably interposed between the end face of the globe and the marginal portion of the washer 2b.

The support 13 may be one of the mud guards of an autombile, or any other suitable flxed part thereof. The support is provided with an orifice surrounding the socket 12. The inner ring seat 16 bears on one side of the support, and a clamping nut 37, engaged with a threaded extension of the socket, bears on the opposite side.

I claim:

1. In combination, a lamp socket, a globe adapted to enclose a lamp held by the socket, an inner coupling ring flxed to the socket and provided with an outwardly projecting annular seat and with outwardly projecting ears above the seat, an outer coupling ring flxed to the globe, and provided with an inwardly projecting annular flange,

adapted to bear on the seat, said flange having notches arranged to register with said cars, so that the rings may be interengaged by sidewise and turning movements of the outer ring, and an annular washer seated on the flange of the outer ring, and including curved resilient spring brakes, arranged to contact with and be tensioned by the inner ring ears when the coupling rings are inter-engaged, and thereby frictionally oppose a turning movement of the outer ring to a released position.

2. In combination, a lamp socket, a globe adapted to enclose a lamp held by the socket, an inner coupling ring fixed to the socket and provided with an outwardly projecting annular seat and with outwardly pro-- jecting ears above the seat, an outer cou pling ring fixed to the globe, and provided with an inwardly projecting annular flange, adapted to bear on the seat, said flange having notches arranged to register with said ears, so that the rings may be interengaged by sidewise and turning movements of the outer ring, and an annular washer seated on the flange of the outer ring, and including curved resilent spring brakes, arranged to contact with and be tensioned by the inner ring ears when the coupling rings are interengaged, and thereby frictionally oppose a turning movement of the outer ring to a released position, the washer and the outer ring flange being provided with interengaging means for preventing turning movements of the washer on the flange.

In combination, a lamp socket, a globe adapted to enclose a lamp held by the socket, an inner coupling ring fixed to the socket and provided with an outwardly projecting annular seat and with outwardly projecting ears above the seat, an outer coupling ring fixed to the globe, and provided with an inwardly projecting annular flange, adapted to bear on the seat, said flange having notches arranged to register with said ears, so that the rings may be interengaged by side wise and turning movements of the outer ring, and an annular washer seated on the flange of the outer ring, and inclucing curved resilient spring brakes, arranged to contact with and be tensioned by the inner ring ears when the coupling rings are interengaged, and thereby frictionally oppose aturning movement of the outer ring to a released position, the inner ring seat and the outer ring flange being provided with detent means, causing a semi-positive engagement between said seat and flange, when the rings are interengaged.

In testimony whereof I have afiixed my signature.

HUGH W. BATCHELLER. 

